TMS zl Management and Configuration Guide ST.1.2.100916

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Troubleshooting
Troubleshooting the TMS zl Module in Routing Mode
Figure 10-8. Strategy for Troubleshooting Firewall Issues
This strategy is outlined in the sections that follow.
Define the Problem. When you define the problem, you should determine
exactly what traffic is being handled incorrectly. List the source and destina-
tion addresses, the VLANs, the zones, and the type of traffic (both protocol
and port). Then, list the exact problem, as you understand it at this point.
As you begin to troubleshoot, you will gather additional information about the
problem—clarifying it even further—until you find a solution. You may want
to create a troubleshooting table to help you record all this information, as
shown in Table 10-6. Then, when you are finished, you will have a record of
the problem, the steps you took to discover its cause, and the solution. This
documentation may help you resolve other problems in the future.